Ideas for an Illager Mod?

Sneaky Illager.

Lore: Used to be a Wandering Trader who was held hostage by Illagers.

Abilities: Turns invisible while attacking Player/Entity.

Can you also add things for Pillagers?

example: ravager cages wit 1-2 Ravagers in

Wolollager: They are dressed in a toga with a red band and have a tonsure-like haircut. They can't attack, but can throw healing potions to other illagers and turn villagers into Pillagers or Vindicators.

Pyroller: They are Illagers with red eyes, burn-like scars and smoke particles that set crops on fire, place TNT near doors and run away from the player when its attacked throwing a TNT and leaving a fire trail on its way. 

Voidllagers: Their skin is black and their eyes are purple. They have an ender pearl on their hands, and whenever it touches a player, teleports it randomly (as a chorus fruit) dealing 5 damage (as an ender pearl) 

Elementalists: They wear different colors hooded robes.

Air: White (or light yellow) robe. It shoots shulker projectiles and whenever the player gets close, it produces a high knockback effect with a wind sound. When it's killed, a lightning strikes wherever the player was standing a second ago every three seconds three times. Illagers that are close to it receive a speed boost. 

Fire: Red robe. It shoots fire charges, lights a 6x6 area surrounding it on fire (which they are immune to) and summons a 3 height 5 wide wall of magma blocks between them and the player (it doesnt do that very often). When it dies, a Blaze appears. Illagers that are close to it receive a damage boost.

Earth: Dark green robe. It's immune to projectiles and explosions. It shoots solid blocks (which stand wherever they hit). Those blocks can be Sand, Gravel, Cobblestone, Iron ore or Obsidian (every block deals more damage than the previous one). It can create a dirt and cobblestone 5x5 roofed cage centered on the player of 4 height walls (it doesnt do that very often). It can summon a Creeper (also not very often). When it dies, it turns into stone like texture and attracts the player during 3 seconds, and then it explodes. In this state, it can be fully killed with a picaxe to avoid the explosion. Illagers that are close to it receive a resistance boost.

Water: Blue robe. It shoots snowballs that slow the target. It's unaffected by fire, poison and negative debbufs. It can walk over the water and isn't affected by water currents. Summons a 5 tall 5x5 water cage arount itself. When its health is low, it starts to regenerate (stops attacking until its full health) and becomes immune to proyectiles, and when it dies, the water cage becomes ice (also roofed with an ice layer) and fills with water. Illagers that are close to it become immune to fire, poison and negative debbufs and receive regeneration.

Death: Black robe. Also darker greenish skin with red eyes. It shoots proyectiles that inflict wither and blindness. Summons undead creatures. When it dies, deals 2 damage to near players ignoring armor and kills all mobs in a 10 block radius summoning undead armored creatures on their places and sets time night. 

Probably you should make so some of this illager/pillagers could spawn on raids

I think that could be possible without coding, but probably the raid would not count if you killed or not the mob 

Also you could do an illager merchant. A pacific illager "unless you attack him" that, instead of liking emeralds like villagers do, they like lapis lazuli, for its magic properties. They can sell potions, banners, books...